A research-methods proposal for studying when models misbehave in realistic use. It starts from recorded failures, varies environment conditions or the policy, and asks how those observations can support estimates of behavior in a target task distribution.
CUA-Universe turns desktop applications into shared-state GUI and CLI environments, then generates tasks and training trajectories. Supervised fine-tuning teaches a 9B model to coordinate the two interfaces with higher task scores and lower interaction costs.
Terminal-Universe reconstructs reusable terminal environments from recorded agent trajectories, then generates new tasks within projects, across related codebases, and over multiple user rounds. SFT experiments suggest that expanding environment diversity can produce more useful supervision than adding queries or solutions to existing environments.
A GRPO replay method that reuses past rollout groups according to their remaining learning value and compatibility with the current policy. Experiments examine when replay can replace costly fresh environment interactions in reasoning and agent training.
An Anthropic study and LessWrong discussion examining how reward hacking learned in deliberately vulnerable RL environments can transfer to harmful behavior in other evaluation scenarios. The findings also show important limits to that transfer.
A work-in-progress study of long-horizon agent reinforcement learning that uses privileged process supervision to redistribute verified trajectory-level credit across executable actions.
A practical framework for locating the binding constraint in an RL system across environments, rollout generation, reward quality, optimization, and evaluation.
An official GLM-5.3 release note describing a post-training-only update on the same base model as GLM-5.2, with expanded executable environments for complex coding, security, and long-horizon professional workflows.
A community synthesis linking four training signals—imitation, human approval, automatic verifiers, and LLM judges—to distinct classes of observed or hypothesized alignment failure.
A LessWrong proposal to let policies report exploitable RLVR environment bugs after a rollout, reward high-quality verified reports, and use them to patch the training environment.
A technical report on Kimi K3, a 2.8T-parameter sparse multimodal model with 104B active parameters and a one-million-token context window, post-trained with reinforcement learning across general, agentic, coding, and reasoning domains.
A technical report on Athena-Brain-8B, an on-device embodied model trained through general supervised fine-tuning, general reinforcement learning, embodied-expert training, and model merging.
A technical report on Fugu and Fugu-Ultra, language-model orchestrators trained to construct query-adaptive scaffolds for teams of heterogeneous LLM agents.
An official release of the 750B-A40B GLM-5.2 model, combining a one-million-token context, IndexShare sparse-attention reuse, and larger-scale agentic reinforcement learning for long-horizon tasks.
A model-family report on Ling-2.6 and Ring-2.6, combining architectural migration, long-context efficiency work, token-efficient reasoning objectives, and asynchronous agent reinforcement learning at trillion-parameter scale.
An official release of MiniMax-M3, a natively multimodal sparse model with about 428B total and 23B active parameters, a one-million-token context window, and agent-oriented coding and cowork capabilities.
A technical report on the MiniMax-M2 family, pairing a 229.9B-parameter sparse MoE with agent-generated, verifiable trajectories and Forge, a scalable reinforcement-learning system for long-horizon agents.
An official GLM-5.1 model update focused on keeping an agent productive across longer coding and engineering runs through repeated execution, inspection, diagnosis, and strategy revision.
A technical report on Composer 2, a specialized coding model trained through continued pretraining followed by large-scale reinforcement learning on long-horizon software-engineering tasks.
A GLM-5 technical report centered on agentic engineering, combining a more efficient long-context architecture with asynchronous reinforcement-learning infrastructure and agent RL for complex, long-horizon software tasks.
WebArena provides self-hosted, realistic websites and benchmark tasks for agents that must navigate interfaces, maintain state, and complete multi-step goals.
Voyager combines an automatic curriculum, an executable skill library, and iterative prompting to build an open-ended Minecraft agent without model parameter updates.
This work frames task-distribution design as an optimization problem and introduces PAIRED, where an environment generator uses regret to create solvable but challenging curricula.